Scientific and Technical Aerospace Reports


Book Description

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.




Potential for Broader DoD Use of Commercial Turbine Engine Acquisition Practices and Processes


Book Description

Seeking ways to reduce military aircraft expenditures, IDA investigated the potential for expanded military use of commercial acquisition practices and processes to acquire and maintain aircraft turbine engines. This commercial acquisition process includes the Federal Aviation Administration (FAA) certification procedure for aircraft turbine engines. IDA reviewed the extent to which commercial engines can meet military aircraft application requirements. The review compared commercial aircraft turbine engine acquisition practices and processes to those used by the military. Past use of commercial subsonic turbine engines in military transport and similar utility aircraft has clearly shown that commercial practices and processes can be used successfully to develop and produce engines for subsonic military applications. However, the examination of the technical requirements for subsonic and supersonic aircraft engines found several design differences. IDA recommends that (1) DoD retain the present military turbine engine development process for supersonic military fighter/attack aircraft, and (2) DoD engine procurement procedures be streamlined by incorporation of the proven compatible commercial aircraft engine acquisition processes for subsonic transport, tankers, unmanned air vehicles, utility aircraft, and selected bomber applications.







Best Practices


Book Description




Aeronautical Engineering


Book Description

A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)







Implementing Performance-based Services Acquisition (PBSA)


Book Description

The U.S. Air Force is implementing performance-based practices in its service contracts to improve quality and reduce costs. Earlier Project AIR FORCE research examined implementation in installation support services. The project has now examined purchased services that support weapon system development and sustainment ('systems' services). Under performance-based services acquisition (PBSA), buyers should (1) describe what service is desired (not how to do it), (2) use measurable performance standards and quality assurance plans, (3) specify procedures for reductions in fee or price when services do not meet contract requirements, and (4) include performance incentives where appropriate. The authors conducted interviews at an Air Logistics Center and a Product Center to learn whether and how service contracts included these performance-based practices. Many at the two Centers felt that it is difficult for systems service contracts to satisfy all four of the PBSA criteria. To satisfy the requirement to use "measurable performance standards," for example, some personnel believe that the desired result of a service must be known in advance and objective data must be collected frequently to measure performance against that result. This cannot be easily done for many systems services such as engineering support and advisory and assistance services. Despite this difficulty, however, both Centers use a performance-based approach (applying the other three criteria) to purchase many services, and many personnel felt that they can determine and convey whether the contractor met their needs. The authors conclude that many of the approaches used by the Centers satisfy the intent of the criteria.